Ink cartridge



FIG. 1 is a top plan view of an ink cartridge;

FIG. 2 is a front view of the ink cartridge;

FIG. 3 is a left side view of the ink cartridge;

FIG. 4 is a right side view of the ink cartridge;

FIG. 5 is a bottom plan view of the ink cartridge;

FIG. 6 is a rear view of the ink cartridge; and,

FIG. 7 is a perspective view of the ink cartridge. 

The ornamental design for an ink cartridge, as shown and described. 